18 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
the limestones. These limestones are exactly like the Bone Spring 
limestone of the Guadalupe Mountains. Furthermore, some of the 
fossils of the Lower Word (limestone No. 1) are those of the under- 
lying Leonard: Dictyoclostus bassi and Perrinites, a goniatite. 
According to A. K. Miller (1945, p. 14) Perrinites characterizes 
the Leonard but the Lower Word is actually also in the zone of 
Perrinites. Furthermore, a few brachiopods that appear first in Word 
limestone No. 1 are prophetic of the higher Word. The most im- 
portant one of these is Muirwoodia, which has not yet been seen in 
the Leonard. Chiefly on the basis of the presence of Muirwoodia 
the Oregon Permian seems to ally itself with the Word limestone 
No. 1. No other brachiopod species or genera in the Oregon Permian 
are violently in conflict with this notion. 
A correlation of the Oregon Permian with the lower Word also 
suggests alliance of the fauna with that of the Phosphoria of Idaho 
where Muirwoodia is also present, together with other species that 
are in line with this correlation. The Monos formation of Mexico 
has been allied with the Phosphoria, but it seems to have affinities 
rather with the middle or upper Word than with the lower part. 
British Columbia.—The Cache Creek formation of British Colum- 
bia has long been known to be of Permian age. Parts of it have been 
correlated with Wolfcampian and Leonardian (Thompson and Ver- 
ville, 1950) but still younger Permian, the Guadalupian, has also 
been recognized (Thompson, Wheeler, and Danner, 1950). Kindle 
(1926) described a species of Leptodus from this formation in British 
Columbia, and Girty (in Daly 1915, pp. 121-122) listed some Russian 
species that are the same as some listed herein. However, the for- 
mation or series was dated as Pennsylvanian rather than Permian. 
Crockford and Warren (1935) published a list of fossils from the 
Cache Creek series which includes names similar to or identical with 
those recorded in Oregon. These authors indicate the Eurasiatic affini- 
ties of the fauna and the slight resemblance to the faunas of the Glass 
Mountains and the Phosphoria. They did not, however, offer a spe- 
cific correlation. 
It seems safe to say that the Oregon fauna is represented in the 
Cache Creek series, not in the lower or Wolfcampian part but in 
post-Wolfcampian beds. The fossils listed by Crockford and Warren 
came from the upper part of the series, and it is to this part that the 
Oregon fauna is related. 
